I am co-founder of the Lyon-based startup 109Lab (http://109lab.com/). We are behind the OhMyToast (http://ohmytoast.com/) service targeted to helping people make something of their digital memories sleeping on their hard drives.

We use diverse technologies among which lots of open-source such as Camel, Lucene and likely Mahout, Zookeeper, OpenCV.

Making all this work together allows us to really build cool stuff quickly ;)